The AEM Engine Management System (EMS) is the result of extensive
development on a ... C:\Program Files\AEM\AEMTuner\Calibrations\Honda-Acura
\ .... Please follow this suggested wiring diagram when adding accessories such
as UEGO .... D16. Secondary 02 Sensor. Lambda 2. Input. Available, 0-5V
Lambda 2 input.
Installation Instructions for: EMS P/N 30-6040 1992-1995 Civic / Del Sol / Integra 90-95 Accord / Prelude (2.1L Only)
Thank you for purchasing an AEM Engine Management System. The AEM Engine Management System (EMS) is the result of extensive development on a wide variety of cars. Each system is engineered for the particular application. The AEM EMS differs from all others in several ways. The EMS is a stand alone system, which completely replaces the factory ECU and features unique Plug and Play Technology, which means that each system is configured especially for your make and model of car without any jumper harnesses. There is no need to modify your factory wiring harness and in most cases your car may be returned to stock in a matter of minutes. For stock and slightly modified vehicles, the supplied startup calibrations are configured to work with OEM sensors, providing a solid starting point for beginner tuning. For more heavily modified cars, the EMS can be reconfigured to utilize aftermarket sensors and has many spare inputs and outputs allowing the elimination of add-on rev-limiters, boost controllers, nitrous controllers, fuel computers, etc. It also includes a configurable onboard 1MB data logger that can record any 16 EMS parameters at up to 250 samples per second. Every EMS comes with all functions installed and activated; there is no need to purchase options or upgrades to unlock the full potential of your unit. The installation of the AEM EMS on the supported vehicles uses the stock sensors and actuators. After installing the AEMTuner software, the startup calibration will be saved to the following folder on your PC: C:\Program Files\AEM\AEMTuner\Calibrations\Honda-Acura\ Multiple calibrations may be supplied for each EMS; additional details of the test vehicle used to generate each calibration can be found in the Calibration Notes section for that file. Please visit the AEM Performance Electronics Forum at http://www.aempower.com and register. We always post the most current strategy release, PC Software and startup calibrations online. On the forum, you can find and share many helpful hints/tips to make your EMS perform its best.
TUNING NOTES AND WARNING: While the supplied startup calibration may be a good starting point and can save considerable time and money, it will not replace the need to tune the EMS for your specific application. AEM startup calibrations are not intended to be driven aggressively before tuning. We strongly recommend that every EMS be tuned by someone who is already familiar with the AEM software and has successfully tuned vehicles using an AEM EMS. Most people make mistakes as part of the learning process; be warned that using your vehicle as a learning platform can damage your engine, your vehicle, and your EMS.
Read and understand these instructions BEFORE attempting to install this product. 1) Install AEMTuner software onto your PC The latest version of the AEMTuner software can be downloaded from the AEMTuner section of the AEM Performance Electronics forums. Series 2 units are not supported by the older AEMPro tuning software. 2) Remove the Stock Engine Control Unit a) Access the stock Engine Control Unit (ECU). The location of the ECU on the OBD1 Hondas is behind the driver side kick panel. b) Carefully disconnect the wiring harness from the ECU. Avoid excessive stress or pulling on the wires, as this may damage the wiring harness. Some factory ECUs use a bolt to retain the factory connectors, and it must be removed before the harness can be disconnected. There may be more than one connector, and they must all be removed without damage to work properly with the AEM ECU. Do not cut any of the wires in the factory wiring harness to remove them. c) Remove the fasteners securing the ECU to the car body, and set them aside. Do not destroy or discard the factory ECU, as it can be reinstalled easily for street use and troubleshooting. 3) Install the AEM Engine Management System. a) Plug the factory wiring harness into the AEM EMS and position it so the wires are not pulled tight or stressed in any manner. Secure the EMS with the provided Velcro fasteners. b) Plug the comms cable into the EMS and into your PC. c) Turn the ignition on but do not attempt to start the engine. d) The USB drivers must be installed the first time you connect to a Series 2 EMS with an onboard USB port. When the Series 2 EMS is connected to the PC’s USB port and receiving power from the vehicle, the “Found New Hardware” window will appear. Select “Install from a list of specific location (Advanced)” and browse to the following folder: C:\Program Files\AEM\AEMTuner\USB Drivers (Series 2)\
e)
With the AEMTuner software open, select ECU>>Upload Calibration to upload the startup calibration file (.cal) that most closely matches the vehicle’s configuration to be tuned. Check the Notes section of the calibration for more info about the vehicle it was configured for. These files can be found in the following folder: C:\Program Files\AEM\AEMTuner\Calibrations\Honda-Acura\
f)
Set the throttle range: Select Wizards>>Set Throttle Range and follow the onscreen instructions. When finished, check that the ‘Throttle’ channel never indicates less than 0.2% or greater than 99.8%, this is considered a sensor error and may cause some functions including idle feedback and acceleration fuel to operate incorrectly.
4) Ready to begin tuning the vehicle. a) Before starting the engine, verify that the fuel pump runs for a couple of seconds when the key is turned on and there is sufficient pressure at the fuel rail. If a MAP sensor is installed, check that the Engine Load indicates something near atmospheric pressure (approximately 101kPa or 0 PSI at sea level) with the key on and engine off. Press the throttle and verify that the ‘Throttle’ channel responds but the Engine Load channel continues to measure atmospheric pressure correctly. b)
Start the engine and make whatever adjustments may be needed to sustain a safe and reasonably smooth idle. Verify the ignition timing: Select Wizards>>Ignition Timing Sync from the pull-down menu. Click the ‘Lock Ignition Timing’ checkbox and set the timing to a safe and convenient value (for instance, 10 degrees BTDC). Use a timing light and compare the physical timing numbers to the timing value you selected. Use the Sync Adjustment Increase/Decrease buttons to make the physical reading match the timing number you selected.
c)
Note: This calibration needs to be properly tuned before driving the vehicle. It is intended for racing vehicles and may not operate smoothly at idle or part-throttle. NEVER TUNE THE VEHICLE WHILE DRIVING
5) Troubleshooting an engine that will not start a) Double-check all the basics first… engines need air, fuel, compression, and a correctly-timed spark event. If any of these are lacking, we suggest checking simple things first. Depending on the symptoms, it may be best to inspect fuses, sufficient battery voltage, properly mated wiring connectors, spark using a timing light or by removing the spark plug, wiring continuity tests, measure ECU pinout voltages, replace recently-added or untested components with known-good spares. Check that all EMS sensor inputs measure realistic temperature and/or pressure values. b)
If the EMS is not firing the coils or injectors at all, open the Start tab and look for the ‘Stat Sync’d’ channel to turn ON when cranking. This indicates that the EMS has detected the expected cam and crank signals; if Stat Sync’d does not turn on, monitor the Crank Tooth Period and T2PER channels which indicate the time between pulses on the Crank and T2 (Cam) signals. Both of these channels should respond when the engine is cranking, if either signal is not being detected or measuring an incorrect number of pulses per engine cycle the EMS will not fire the coils or injectors.
c)
If the Engine Load changes when the throttle is pressed this usually indicates that there is a problem with the MAP sensor wiring or software calibration; when the EMS detects that the MAP Volts are above or below the min/max limits it will run in a failsafe mode using the TPS-to-Load table to generate an artificial Engine Load signal using the Throttle input. This may allow the engine to sputter or start but not continue running properly.
Solution for distributed ignition ‘kick back’ when cranking: With the Series 1 EMS, some vehicles would experience erratic ignition timing at low RPM. The most noticeable symptom would be an engine that ‘kicks back’ when cranking, and in some cases the EMS would count timing errors or lose ‘Stat Sync’ at low engine speeds. These problems have been eliminated by adjusting calibration settings in Series 2 Honda EMS startup calibrations, but could be re-introduced by converting Series 1 calibrations or copying values from Series 1 calibrations. If users wish to convert old Series 1 calibrations for use with the new Series 2 EMS, please ensure that the following options and tables match the Series 2 startup calibration: Crank H Sens Below, Crank L Sens Above, Cam(T2) H Sens Below, Cam(T2) L Sens Above, Coil Dwell Factor, Dwell Max, Dwell Min, Dwell vs RPM (table), Dwell vs Batt Volts (table)
Wiring accessories to the EMS: Please follow this suggested wiring diagram when adding accessories such as UEGO gauges, Boost Control solenoids, or switches for use with the EMS. Note that wire polarity is not important for the Boost Control Solenoid.
Connection Diagram for EMS P/N 30-6040 Pin # OBD1 Honda / Acura AEM EMS 30-6040 A1 Injector 1 Injector 1 A2 Injector 4 Injector 4 A3 Injector 2 Injector 2 A4 VTEC Solenoid Valve High Side Driver 1 A5 Injector 3 Injector 3 A6 Primary 02 Heater Control Injector 6 A7 Fuel Pump Relay Low Side Driver 11 A8 Fuel Pump Relay (Accord/Prelude Only) Injector 5 A9 Idle Air Control Valve PW 1 A10 --Low Side Driver 2 A11 EGR Solenoid (Accord/Prelude Only) Injector 10 A12 Radiator Fan Control (Except Prelude) Low Side Driver 12 A13 Malfunction Indicator Light Low Side Driver 10 A14 --Injector 8 A15 A/C Clutch Relay Low Side Driver 6 A16 Alternator Control (Except Accord/Prelude) Injector 7 A17 IAB Control Solenoid (Accord/Integra Only) Idle #2 A18 --Low Side Driver 8 A19 --Idle #4 A20 EVAP Purge Control Solenoid Low Side Driver 4 A21 A22 A23 A24 A25 A26
Ignition Control Module Ignition Control Module Power Ground 1 Power Ground 2 Power Source 1 Logic Ground 1
Coil 1 CAN1L Power Ground Power Ground +12V Switched Power Ground
I/O Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output Output --Both Both Both Both
Availability PnP for Injector 1 PnP for Injector 4 PnP for Injector 2 PnP for VTEC Solenoid PnP for Injector 3 Avail, Injector Gnd, 1.5A max PnP for Fuel Pump Relay Avail, Injector Gnd, 1.5A max PnP for Idle Air Control Valve Avail, Switched Gnd, 1.5A max Avail, Injector Gnd, 1.5A max PnP for Radiator Fan Avail, Switched Gnd, 1.5A max Avail, Injector Gnd, 1.5A max PnP for A/C Clutch Relay Avail, Injector Gnd, 1.5A max Avail, Ground / +12V, 1.5A max Avail, Switched Gnd, 1.5A max Avail, Ground / +12V, 1.5A max Avail, Switched Gnd, 1.5A max PnP for Ignition Control Module (12/0V Rising edge) Dedicated Dedicated Dedicated Dedicated Dedicated
Pin # B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16
Pin # C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12
OBD1 Honda / Acura Power Source 2 Logic Ground 2 ----A/C Switch Signal ----Power Steering Pressure Switch Starter Switch Signal Vehicle Speed Sensor CYP + CYP TDC + TDC CKP + CKP-
OBD1 Honda / Acura -------------------------
AEM EMS 30-6040 +12V Switched Power Ground Coil 3 Coil 4 Switch 3 Coil 2 ADCR13 Switch 5 +12V When Cranking T3 (Vehicle Speed) Cam Sensor Timing Ground T4 (Spare Speed) Timing Ground Crank Sensor Timing Ground
AEM EMS 30-6040 +12V Switched CAN1H Tach Output (LS7) Low Side Driver 9 Switch 6 Low Side Driver 1 Switch 1 IDLE #3 ADCR14 PW 2 High Side Driver 2 Switch 2
I/O Both Both Output Output Input Output Input Output Input Input Input Output Input Output Input Output
Availability Dedicated Dedicated Avail, Rising Edge Trigger Coil Out Avail, Rising Edge Trigger Coil Out PnP for A/C Switch Signal Avail, Rising Edge Trigger Coil Out Avail, 0-5 Volt Input, 100k pull up Avail, Switched Input Dedicated PnP for Vehicle Speed Sensor Dedicated, PnP 1 pulse per cycle Dedicated Avail, Magnetic Speed Sensor Dedicated Dedicated, PnP 24 pulses per cycle Dedicated
I/O Input --Output Output Input Output Input Output Input Output Output Input
Availability Dedicated Dedicated Avail, Switched Gnd, 1.5A max Avail, Switched Gnd, 1.5A max Avail, Switched Input Avail, Switched Gnd, 1.5A max Avail, Switched Input Avail, Ground / +12V, 1.5A max Avail, 0-5 Volt Input, 100k pull up Avail, Boost Control Solenoid Avail, +12V, 1.5A max Avail, Switched Input
Pin # OBD1 Honda / Acura AEM EMS 30-6040 D1 Voltage Back Up Permanent +12V D2 Brake Switch (Except Prelude) EGT 2 D3 Knock 1 Knock 1 D4 Service Check Connector Injector 9 D5 --EGT 1 D6 VTEC Pressure Switch Switch 4 D7 Data Link Connector High Side Driver 1 D8 --MAF D9 Alternator FR Signal EGT 3 D10 Electronic Load Detector EGT 4 D11 Throttle Position Sensor TPS D12 EGR Valve Lift Sensor (Accord/Prelude Only) ADCR11 D13 Engine Coolant Sensor Coolant D14 Primary 02 Sensor Lambda 1 D15 Inlet Air Temp Sensor AIT D16 Secondary 02 Sensor Lambda 2 D17 Map Sensor MAP D18 Shift Up Indicator Light (D15 only) IDLE #1 D19 Sensor Voltage 1 +5V Sensor D20 Sensor Voltage 2 +5V Sensor D21 Sensor Ground 1 Sensor Ground D22 Sensor Ground 2 Sensor Ground
I/O Input Input Input Input Input Input Output Input Input Input Input Input Input Input Input Input Input Output Output Output Output Output
Availability Dedicated Avail, jumper set for 0-5V Input Dedicated Avail, Injector Gnd, 1.5A max Avail, jumper set for 0-5V Input Avail, Switched Input Avail, same as pin A4 Avail, 0-5 Volt Input, 100k pull up Avail, jumper set for 0-5V Input Avail, jumper set for 0-5V Input Dedicated Avail, 0-5 Volt Input, 100k pull up Dedicated, 2.2k pull up Available, 0-5V Lambda 1 input Dedicated, 2.2k pull up Available, 0-5V Lambda 2 input Dedicated Avail, Ground / +12V, 1.5A max Dedicated Dedicated Dedicated, sensors only Dedicated, sensors only
30-1040 (Series 1) vs 30-6040 (Series 2) OBD1 Honda EMS pin differences: The EMS functions assigned to certain pins have been changed and no longer match the 30-1040 EMS. Unless otherwise noted, the following pins and functions will need to be manually reconfigured after using AEMTuner to convert a V1.19 (30-1100, Series 1 EMS) calibration for use with the 30-6100 Series 2 hardware.
Pin A22
OBD1 Honda / Acura Ignition Control Module
30-1040 function ---
30-6040 function CAN1L
B4 C2 D4
----Service Check Connector
Coil #5 --Knock #2
Coil 4 CAN1H Injector 9
Notes Copy settings for Ign Phasing, knock feedback, cylinder ign trim Knock 2 not available
AEM Electronics Warranty Advanced Engine Management Inc. warrants to the consumer that all AEM Electronics products will be free from defects in material and workmanship for a period of twelve months from date of the original purchase. Products that fail within this 12-month warranty period will be repaired or replaced when determined by AEM that the product failed due to defects in material or workmanship. This warranty is limited to the repair or replacement of the AEM part. In no event shall this warranty exceed the original purchase price of the AEM part nor shall AEM be responsible for special, incidental or consequential damages or cost incurred due to the failure of this product. Warranty claims to AEM must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser of product and is non-transferable. All implied warranties shall be limited in duration to the said 12-month warranty period. Improper use or installation, accident, abuse, unauthorized repairs or alterations voids this warranty. AEM disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by AEM. Warranty returns will only be accepted by AEM when accompanied by a valid Return Merchandise Authorization (RMA) number. Product must be received by AEM within 30 days of the date the RMA is issued.
AEM CHIPS
PERFORMANCE CHIPS
